Mexico arrests four gang members in students' disappearance

MEXICO CITY - Mexican authorities on Monday said they had arrested four drug gang members involved in the kidnapping of dozens of student teachers who disappeared last month and are feared massacred.

The announcement came as local media reported that a mass grave has been discovered in a trash dump outside mountain town of Cocula, near Iguala in the southwestern state of Guerrero, where 43 students disappeared after they clashed with police and masked men on Sept 26.